Intrinsic magnetic properties of (Nd1-xSmx)Fe11 Ti

JOURNAL OF ALLOYS AND COMPOUNDS

卷:864

Article

Niarchos, Dimitris¹  Gjoka, Margaritis¹  Schonhobel, Ana Maria²  Aubert, Alex²  Madugundo, Rajasekhar²  Saiz Garitaonandia, Jose Javier³  Barandiaran, Jose Manuel^2,3  Hadjipanayis, George⁴ 

[1] NCSR Demokritos, Aghia Paraskevi 15310, Greece

[2] Basque Ctr Mat Applicat & Nanostruct, BCMat, Leioa 48940, Spain

[3] Univ Basque Country, Fac Sci & Technol, UPV EHU, Leioa 48940, Spain

[4] Univ Delaware, Newark, DE 19716 USA

关键词: Rare earth alloys;    ThMn12 structure;    Magnetic anisotropy;    Mossbauer spectroscopy;    Permanent magnets;   

DOI  :  10.1016/j.jallcom.2020.158097

来源: Elsevier

【 摘 要 】

A series of (Nd1-xSmx)Fe11Ti alloys with the ThMn12 crystal structure have been fabricated and characterized in order to promote a strong uniaxial anisotropy in NdFe11Ti without the need of nitrogenation. The compounds show small changes in the lattice parameters and cell volume, as well as Curie temperature and spontaneous magnetization. The anisotropy field, however, rapidly increases with the incorporation of Sm and overcomes the effect of nitrogenation, reaching values >4 T for a 30% Sm content. Mossbauer spectroscopy indicates that the quadrupole splitting is correlated with the magnetic anisotropy. These alloys are good candidates for permanent magnets, provided the correct microstructure is developed to increase coercivity. (C) 2020 Elsevier B.V. All rights reserved.

【 授权许可】

Free